My local Home Hardware store sells fasteners by the pound in which it thankfully differs from all other stores selling fasteners here. The savings are substantial. Unless you want set screws: Those come in packages of one. A 3/16" 6-32 set screw costs $0.59.
I weighed it as accurately as I could and it weighs 0.1 gm. This makes it about $167 an ounce. This is over ten times more expensive than silver and just sligthly cheaper than palladium.
Now the question is what proportion of one's investment portfolio should be in set screws? Should one dabble in the set screw futures? From ethical point of view, is there such thing as a "blood set screw"?